International Journal of Fracture最新文献_第8页

Contact problem of two punches in an elastic coating attached to a porous material 多孔材料弹性涂层中两个冲头的接触问题

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-03-11 DOI: 10.1007/s10704-023-00761-4

Yonglin Yang, Shenghu Ding, Xing Li, Wenshuai Wang

{"title":"Contact problem of two punches in an elastic coating attached to a porous material","authors":"Yonglin Yang, Shenghu Ding, Xing Li, Wenshuai Wang","doi":"10.1007/s10704-023-00761-4","DOIUrl":"10.1007/s10704-023-00761-4","url":null,"abstract":"<div><p>This paper investigates the contact problem of an elastic layer that is perfectly attached to a porous half-space by two rigid flat punches with collinear symmetry. Using integral transformation, the problem is condensed to a singular integral equation of the Cauchy type. Then, the exact expressions for the surface contact stress and surface interface displacement are provided. By using the Gauss–Chebyshev technique, the integral equations are solved numerically, and the variations of the unknown contact stresses and deformations for different parameters are addressed. The results indicate that stress concentration is typically higher on the outer edge of the contact area compared to the inner edge. This also explains why surface damage is more likely to occur on the outer edge in elastic and poroelastic materials. Due to the interaction between the two punches, there will be a superposition of normal displacements at the center. The deformation or bulging at the center can be managed by adjusting the parameter values, allowing the engineered material to fulfill its intended purpose. The potential applications of these research findings encompass safeguarding porous structures against contact-related deformation and damage.</p></div>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":"246 2-3","pages":"265 - 291"},"PeriodicalIF":2.2,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140099199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the whole dynamical fracture process of sandstone samples 砂岩样本整体动态断裂过程研究

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-02-27 DOI: 10.1007/s10704-023-00759-y

Fu Cao, Liping Yang, Lian Li, Yuefeng Li, Qi-zhi Wang, Enlong Liu

{"title":"Study on the whole dynamical fracture process of sandstone samples","authors":"Fu Cao, Liping Yang, Lian Li, Yuefeng Li, Qi-zhi Wang, Enlong Liu","doi":"10.1007/s10704-023-00759-y","DOIUrl":"10.1007/s10704-023-00759-y","url":null,"abstract":"<div><p>The single cleavage drilled compression specimens of sandstone were impacted by the large-diameter split Hopkinson pressure bar, during which the whole model-I dynamical fracture process was successfully observed. A crack propagation gauge is used to monitor the key time moment of dynamic initiation, propagation, arrest and re-initiation, respectively. The fractal crack extension model is used to analysis the propagation speed of the tortuous crack, and with further combination of the experimental–numerical-analytical method, to determine the dynamic initiation toughness, dynamic propagation toughness, dynamic arrest toughness, and dynamic re-initiation toughness of sandstone. The results show that in the process of crack propagation, the crack propagation path is torturous; and for this curved path, the value of the universal function, which is characterized by the crack’s velocity, is smaller than that with a straight path. The dynamic propagation toughness thus obtained is closer to its real value by using the fractal model. Sandstone’s dynamic initiation toughness is greater than the dynamic arrest toughness, and the dynamic initiation toughness is slightly bigger than the dynamic re-initiation toughness.</p></div>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":"246 1","pages":"23 - 36"},"PeriodicalIF":2.2,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140001922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crack tip shielding and size effect related to parallel edge cracks under uniaxial tensile loading 单轴拉伸加载下与平行边缘裂纹相关的裂纹尖端屏蔽和尺寸效应

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-02-22 DOI: 10.1007/s10704-023-00756-1

Francesco Ferrian, Pietro Cornetti, Alberto Sapora, Hossein Talebi, Majid R. Ayatollahi

引用次数: 0

Porous plasticity modeling of local necking in sheet metals 金属板局部缩颈的多孔塑性模型

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-02-21 DOI: 10.1007/s10704-024-00764-9

R. Sidharth, S. M. Keralavarma

引用次数: 0

A fatigue model under Cosserat peridynamic framework for concrete fatigue cracking 混凝土疲劳开裂的 Cosserat 周动态框架下的疲劳模型

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-02-20 DOI: 10.1007/s10704-023-00757-0

Xianyang Guo, Ji Wan, Xihua Chu, Shan Li

引用次数: 0

Introduction to the special issue on nonlocal models in fracture and damage 断裂与损伤中的非局部模型特刊简介

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-02-19 DOI: 10.1007/s10704-024-00769-4

Florin Bobaru, Ugo Galvanetto, Ziguang Chen

引用次数: 0

Peridynamic model for chloride diffusion–reaction in concrete reflecting mesostructure characteristic 反映中观结构特征的混凝土中氯离子扩散反应的周动力模型

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-02-16 DOI: 10.1007/s10704-023-00760-5

Xuandong Chen, Xin Gu, Panyong Liu, Jiamin Zhang, Xiaozhou Xia, Qing Zhang

{"title":"Peridynamic model for chloride diffusion–reaction in concrete reflecting mesostructure characteristic","authors":"Xuandong Chen, Xin Gu, Panyong Liu, Jiamin Zhang, Xiaozhou Xia, Qing Zhang","doi":"10.1007/s10704-023-00760-5","DOIUrl":"10.1007/s10704-023-00760-5","url":null,"abstract":"<div><p>Efficient and accurate prediction of chloride concentration distribution in concrete is extremely important for evaluating the durability of reinforced concrete (RC) structures in the coastal region. A peridynamic (PD) framework for chloride diffusion–reaction is proposed to explore the mechanisms of the long-term chloride ingress in concrete. Specifically, the improved intermediately homogenized peridynamic (IH-PD) method is substituted for the solid modeling method of the interface transition zone (ITZ), with the consideration of the mesoscopic characteristics of concrete and great computational efficiency. In addition, considering the effect of concrete mesostructure, an effective chloride diffusion coefficient is constructed based on the Mori–Tanaka method, in which the proportion of various bonds is determined by the statistics. To verify the reliability of the proposed model, the numerical results are compared with the third-party experiments data. From the results, the randomness of concrete mesostructure leads to the randomness of chloride concentration at the same ingress depth, following the normal distribution. Moreover, the chloride diffusion performance which reflects the speed of chloride diffusion is significantly improved with the increase in the water-cement ratio. Noteworthily, the ITZ thickness can be appropriately increased without affecting the reliability of the results.</p></div>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":"245 3","pages":"121 - 135"},"PeriodicalIF":2.2,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139773604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The adaptive coupling of dual-horizon peridynamic element and finite element for the progressive failure of materials 材料渐进失效的双水平围动力学元素与有限元的自适应耦合

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-02-16 DOI: 10.1007/s10704-023-00758-z

Yehui Bie, Kuanjie Ding, Zhifu Zhao, Yueguang Wei

{"title":"The adaptive coupling of dual-horizon peridynamic element and finite element for the progressive failure of materials","authors":"Yehui Bie, Kuanjie Ding, Zhifu Zhao, Yueguang Wei","doi":"10.1007/s10704-023-00758-z","DOIUrl":"10.1007/s10704-023-00758-z","url":null,"abstract":"<div><p>The peridynamic correspondence model (PDCM) provides the stress–strain relation that can introduce many classical constitutive models, however, the high computational consumption and zero-energy mode of PDCM certainly limit its further application to practical engineering crack problems. To solve these limitations and exploit the advantage of PDCM, we propose a simple and effective method that adaptively couples dual-horizon peridynamic element (DH-PDE) with finite element (FE) to simulate the quasi-static fracture problems. To this end, a stabilized dual-horizon peridynamic element for DH-PDCM is firstly developed that the peridynamic strain matrices for the bond and material point are constructed respectively. The nonlocal ordinary and correctional peridynamic element stiffness matrices are derived in detail and calculated by the proposed dual-assembly algorithm. Subsequently, a unified variational weak form of this adaptive coupling of DH-PDE and FE is proposed based on the convergence of peridynamics to the classical model in the limit of vanishing horizon. Therefore, the integrals of the peridynamic element and finite element in this coupling method are completely decoupled in the viewpoint of numerical implementation, which makes it easier to realize the proposed adaptive coupling by switching integral element. Moreover, the proposed adaptive coupling is implemented in Abaqus/UEL to optimize the calculational efficiency and real-time visualization of calculated results, which has potential for dealing with the engineering crack problems. Two-dimensional numerical examples involving mode-I and mixed-mode crack problems are used to demonstrate the effectiveness of this adaptive coupling in addressing the quasi-static fracture of cohesive materials.</p></div>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":"245 1-2","pages":"89 - 114"},"PeriodicalIF":2.2,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-phase-field approach to fracture demonstrating the role of solid-solid interface energy on crack propagation 多相场断裂法显示固-固界面能量对裂纹扩展的作用

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-02-15 DOI: 10.1007/s10704-024-00762-x

Hossein Jafarzadeh, Oleg Shchyglo, Ingo Steinbach

引用次数: 0

Comparison of the phase-field approach and cohesive element modeling to analyze the double cleavage drilled compression fracture test of an elastoplastic material 比较相场法和内聚元素模型，分析弹塑性材料的双劈钻孔压缩断裂试验

IF 2.2 3区工程技术

International Journal of Fracture Pub Date : 2024-01-23 DOI: 10.1007/s10704-023-00755-2

Arnaud Coq, Julie Diani, Stella Brach

{"title":"Comparison of the phase-field approach and cohesive element modeling to analyze the double cleavage drilled compression fracture test of an elastoplastic material","authors":"Arnaud Coq, Julie Diani, Stella Brach","doi":"10.1007/s10704-023-00755-2","DOIUrl":"10.1007/s10704-023-00755-2","url":null,"abstract":"<div><p>Brittle material Mode I fracture may be characterized by the double cleavage drilled compression test. For linear elastic materials, the critical energy release rate, or fracture toughness, can be estimated simply using the linear elastic fracture mechanics. For other types of constitutive behavior, the material parameter has to be determined with numerical fracture modeling. In this paper, we have used two approaches, the phase-field damage model and the cohesive elements, in order to estimate the critical energy release rate of an elastoplastic material. Firstly, we assessed the numerical models and discussed their parameters by comparison of available data from double cleavage drilled compression experimental tests run on a silica glass. Both phase-field damage and cohesive zone models were able to reproduce fracture initiation at the observed macroscopic stress for the linear elastic material. However, the material toughness could not be predicted by the phase-field approach due to the result dependence on the model regularization parameter. Secondly, an elastoplastic methyl methacrylate polymer was submitted to the compression test in our lab. Both models were then extended for elastic-perfectly plastic materials. Crack initiation was obtained at the observed macroscopic strain for similar critical energy release rate ranges for both approaches, providing good confidence in the estimated material toughness.</p></div>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":"245 3","pages":"209 - 222"},"PeriodicalIF":2.2,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139558356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0